Method for Measuring Processing Delays of Voice-Over IP Devices
AssigneeAT&T Intellectual Property I, L.P.
InventorsDavid Ramsden, Wallace F. Smith
Life of this patent
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Abstract
A system and method for recording analog signals exchanged between a telephone device and a VoIP device, capturing packets exchanged between the VoIP device and an IP network, determining analog time values corresponding to analog characteristics of the analog signals, determining digital time values corresponding to digital characteristics of the packets, determining a common reference time for the analog time values and digital time values and determining a processing delay based on the analog time values and the digital time values.
Claims20
A method, comprising:
- recording analog signals exchanged between a telephone device and a VoIP device;
- capturing packets exchanged between the VoIP device and an IP network;
- determining analog time values corresponding to analog characteristics of the analog signals;
- determining digital time values corresponding to digital characteristics of the packets;
- determining a common reference time for the analog time values and digital time values;
- and
- determining a processing delay based on the analog time values and the digital time values.
A system measuring a processing delay of a VoIP device, comprising:
- a recording device recording analog signals exchanged between a telephone device and the VoIP device;
- a packet trace device capturing packets transmitted between the VoIP device and an IP network;
- and
- a processor determining analog time values corresponding to analog characteristics of the analog signals, determining digital time values corresponding to digital characteristics of the packets, determining a common reference time for the analog time values and digital time values and determining a processing delay based on the analog time values and the digital time values.
A computer readable storage medium including a set of instructions executable by a processor, the instructions being operable to:
- record analog signals exchanged between a telephone device and a VoIP device;
- capture packets exchanged between the VoIP device and an IP network;
- determine analog time values corresponding to analog characteristics of the analog signals;
- determine digital time values corresponding to digital characteristics of the packets;
- determine a common reference time for the analog time values and digital time values;
- and
- determine a processing delay based on the analog time values and the digital time values.
Dependencies are inferred from the claim text.